package 面试;

import java.util.concurrent.TimeUnit;

class HoldLockThread implements Runnable{

    private String lockA;
    private String lockB;

    public HoldLockThread(String lockA, String lockB) {
        this.lockA = lockA;
        this.lockB = lockB;
    }


    @Override
    public void run() {
        synchronized (lockA){
            System.out.println(Thread.currentThread().getName() +"\t自己持有：" + lockA + "\t尝试获取：" + lockB);
            try { TimeUnit.SECONDS.sleep(2);} catch (InterruptedException e) {e.printStackTrace(); }
            synchronized (lockB){
                System.out.println(Thread.currentThread().getName() +"\t自己持有：" + lockB + "\t尝试获取：" + lockA);

            }
        }
    }
}

public class DeadLockDemo {

    public static void main(String[] args) {
        String lockA = "lockA";
        String lockB = "lockB";

        new Thread(new HoldLockThread(lockA,lockB),"ThreadAAA").start();
        new Thread(new HoldLockThread(lockB,lockA),"ThreadBBB").start();
    }
}
